Submission #298995

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
298995	2020-09-14 11:54:13	square1001	Fancy Fence (CEOI20_fancyfence)	C++14	43 / 100	47 ms	4216 KiB

fancyfence

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#include <set>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
const int mod = 1000000007;
int main() {
  cin.tie(0);
  ios_base::sync_with_stdio(false);
  int N;
  cin >> N;
  vector<int> H(N), W(N);
  for(int i = 0; i < N; ++i) cin >> H[i];
  for(int i = 0; i < N; ++i) cin >> W[i];
  vector<int> WS(N);
  for(int i = 0; i < N; ++i) {
    WS[i + 1] = WS[i] + W[i];
    if(WS[i + 1] >= mod) WS[i + 1] -= mod;
  }
  vector<int> perm(N);
  for(int i = 0; i < N; ++i) {
    perm[i] = i;
  }
  sort(perm.begin(), perm.end(), [&](int i, int j) { return H[i] > H[j]; });
  set<pair<int, int> > s;
  long long current = 0;
  int ans = 0;
  for(int i = 0; i < perm.size(); ++i) {
    int id = perm[i];
    current = (current + 1LL * W[id] * (W[id] + 1)) % mod;
 
 
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Compilation message (stderr)

fancyfence.cpp: In function 'int main()':
fancyfence.cpp:28:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |  for(int i = 0; i < perm.size(); ++i) {
      |                 ~~^~~~~~~~~~~~~

• Subtask 1: 0 / 0
• Subtask 2: 0 / 12
• Subtask 3: 13 / 13
• Subtask 4: 15 / 15
• Subtask 5: 15 / 15
• Subtask 6: 0 / 18
• Subtask 7: 0 / 27